Air-blast nozzle.



PATENTBD SEPT. 5, 1905.

6. Qin/wa J. HAAS.

AIR BLAST NOZZLE.

APPLICATION FILED rBB.23.19o5.

new a nauw cu wav UNITED STATES PATENT OFFICE.

JOSEPH HAAS, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO SANITARY DEVICES MANUFACTURING COMPANY, OF SAN FhANCISCO, CALIFOR- NIA, A CORPORATION.

Specification of Letters Patent.

Patented Sept. 5, 1905.

Application led February 23, 1905. Serial No. 246,993.

To rr//Z ri/1,0m z't puny concern:

Be it known that I, Josuru Haas, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Air-Blast Nozzles, of which the following is a specification.

My invention relates to air-blast nozzles intended more particularly for emittingair IO under pressure for cleaning' purposes.

especially adapted to be used in systems for cleaning, by means of compressed air, walls, shelves, furniture, and other surfaces and structures.

The object of my invention is to provide very simple, convenient, and efficient means for opening', closing, and regulating` the airoutlet opening. This simplicity of construction and the small number of parts employed facilitates the making of the nozzle and renders it stronger and more durable than nozzles for like purposes generally used heretofore.

An embodiment of my invention is fully hereinafter described and is shown in the accompanying' drawing's, in which-- Fig-ure l is a perspective view of the nozzle. Fig. 2 is a front elevation. Eig. 3 is a vertical cross-section on line ae a' of Fig. 2, showing the outlet closed. Fig. 4 is a horizontal section on line y z/ of Fig. 2. Fig. 5 is a section like Fig. 3, showing' the outlet open.

I represent the nozzle structure as substantially rectangular in front or rear elevation and substantially triangular in end elevation. The main body of the structure is a hollow casting having the top 1 formed with the threaded socket 2, which is connected to the air-supply pipe, the frontwall 3, the rear wall a, and the end walls The end walls may be substantially parallel. The front and rear walls approach each other downwardly; but the rear wall extends below the front wall, leaving' a space, as shown in Fig'. 3, between their edges. The surface of the front wall is machined by planing or milling', so as to form a recess having' a smooth bottom surface, and the machining' operation produces two dove- EO tail guides 6 at the ends of the recess. The

lower edge of the rear wall A is smoothed off slightly 1n the plane of the machined surface of the front wall, as shown at 7 in Figs. 3 and It is This smooth plane edge can be formed by the same machine and at the same time that the front wall is surfaced.

A slide-plate 8 is zuljustable in the dovetail guides of thefront wall and is held in adjustment by a screw-bolt 9, passing' through a slot l0 and screwed into a thickening' or boss 60 ll on the inner surface of the front wall. 'hen the plate is in the pasition of Fig. 3, its surface makes a close lit with the planed edge 7 of the rear wall, and the nozzle is thereby closed. By loosening' the screw-bolt a very delicate upward adjustment of the plate 8 can be made, so as to forman outlet-slit, as shown in Fig. 5, which slit may be of any width within the range of adjustment permitted b v the slot 10. The air under strong' pressure rushes through the slit thus formed, and the nozzle, which has a suitable flexible connection with the air-supply, is applied to the surface or structure to be cleaned.

The simplicity of the construction, comprising' only three parts, as well as of the adjustment and air regulation, will be readily noted. I dispense with all removable parts, such as washers and distance-pieces, heretofore used and substitute fo r them the single sliding' plate, which need not be detached.

lVhile I have described and referred to the device as an air-blast nozzle, it is evident that it can be used for the emission of other fluids, either separately or in connection with an air-current.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. .In an air-blast nozzle, a hollow bodyhaving' two converging' walls one extending' below and into the plane of the other so that their edges are separated, and a single adjustable plate adapted to slide in said plane and to bridge the space between said edges and to be adjusted to leave an outlet-slit.

2. Anair-blastnozzlehaving' front and rear converging' walls, one of which is shorter than the other, a plate adjustable upon the shorter wall, and a plane surface formed at the edge of the longer wall, said surface being' in the plane of the outer surface of the shorter wall.

3. In an air-blast nozzle, relatively long and short converging' walls, and a plate upon the shorter wall, and formingl a movable extension of the same; said plate being adjustable so as IOO either to make an outlet-slot or to close said slolslby contact with the edge of the longer wa 4. 'In an air-blast nozzle, a hollow structure having converging front and rear walls the latter extended below the former, dovetail guides at the ends of the front wall, an adjustable plate in said guides, and means for holding said plate in adjusted position.

5. ln an air-blast nozzle, a wall having its outer surface recessed to forrn a bearing-surface and guides for aslide, a slide adjustable upon said bearing-surface, and a second wall inclined to the plane of the first wall, and having a bearing edge in the plane of said bearing-surface.

6. An air-blast nozzle,cornprising relatively short and long converging front and rear walls 3, 4, a closed top l having a hollow socket 2, and end walls 5, all forming a hollow structure; guides 6 projecting from the face of the front wall, a slotted sliding plate 8 adjustable on the face of the front wall and in said guides, a planed edge 7 on the rear wall and a bolt 9 passing through the slot in said plate and into the front wall.

In testimony whereo` l have atXed my signature, in presence of two witnesses, this 15th day of February, 1905.

JOSEPH HAAS.

Witnesses:

S. WV. SEELY, M. R. SEELY. 

